內容大鋼
This book systematically explores carbon nitride-based semiconductors for photocatalytic hydrogen production through water splitting. Beginning with fundamental concepts of hydrogen generation, it details modifications to pure g-C3N4 and interfacial engineering designs before examining various composite materials: CeO2/g-C3N4 nanocomposites demonstrate enhanced charge separation, while CoO nanoparticle integration improves visible-light absorption. The text analyzes N-doped ZnO/g-C3N4 heterojunctions, MnO2-loaded architectures for oxidative stability, and oxygen-deficient LaVO4/g-C3N4 systems. Advanced configurations include Co-C3N4/BiPO4 dual-cocatalysts, atomically dispersed Co-N4 sites in 2D frameworks, and B/P-doped variants for bandgap modulation, concluding with molten-salt synthesized Fe@C3N4 nanosheets. Each system's synthesis, characterization, mechanistic pathways, and hydrogen evolution performance are rigorously evaluated, culminating in forward-looking perspectives for next-generation photocatalyst development.
目錄
Chapter 1 Introduction
1.1 Hydrogen evolution
1.2 Modification of pure g-C3N4
Reference
Chapter 2 CeO2/g-C3N4 nanocomposite
2.1 Background
2.2 Preparation of CeO2/g-C3N4 composite
2.3 Characterization of CeO2/g-C3N4 composite
2.3.1 XRD of CeO2/g-C3N4 composite
2.3.2 TEM of CeO2/g-C3N4 composite
2.3.3 XPS of CeO2/g-C3N4 composite
2.3.4 UV-vis absorption and PL spectra of CeO2/g-C3N4 composite
2.4 Photocatalytic H2 generation testing of CeO2/g-C3N4 composite
2.4.1 Hydrogen production efficiency
2.4.2 Charge separation and transfer performance
2.4.3 Photocatalytic H2 evolution mechanism
2.5 Conclusion
Reference
Chapter 3 In-situ growing of CoO nanoparticles on g-C3N4 composite
3.1 Background
3.2 Preparation of CoO/g-C3N4 composite
3.3 Characterization of CoO/g-C3N4 composite
3.3.1 XRD of CoO/g-C3N4 composite
3.3.2 TEM of CoO/g-C3N4 composite
3.3.3 XPS of CoO/g-C3N4 composite
3.3.4 UV-vis absorption and PL spectra of CoO/g-C3N4 composite
3.4 Photocatalytic H2 generation testing of CoO/g-C3N4 composite
3.4.1 Hydrogen production efficiency
3.4.2 Charge separation and transfer performance
3.4.3 Mechanism of hydrogen production
3.5 Conclusion
Reference
Chapter 4 ZnO/g-C3N4 with N dopant
4.1 Background
4.2 Preparation of ZnO/g-C3N4 with N dopant
4.3 Characterization of ZnO/g-C3N4 with N dopant
4.3.1 TEM of ZnO/g-C3N4 with N dopant
4.3.2 XRD of ZnO/g-C3N4 with N dopant
4.3.3 XPS of ZnO/g-C3N4 with N dopant
4.3.4 UV-vis absorption and PL spectra of ZnO/g-C3N4 with N dopant
4.4 Photocatalytic activity testing of ZnO/g-C3N4 with N dopant
4.4.1 Hydrogen production and NO removal efficiency
4.4.2 Charge separation and transfer performance
4.4.3 Mechanism of enhanced photocatalytic activity
4.5 Conclusion
Reference
Chapter 5 Manganese dioxides with different exposed crystal plane supported on g-C3N4
5.1 Background
5.2 Preparation of MnO2/g-C3N4 composite
5.3 Characterization of MnO2/g-C3N4 composite
5.3.1 XRD of MnO2/g-C3N4 composite
5.3.2 TEM of MnO2/g-C3N4 composite
5.3.3 UV-vis absorption and PL spectra of MnO2/g-C3N4 composite
5.3.4 XPS and EPR of MnO2/g-C3N4 composite
5.4 Photocatalytic H2 generation testing MnO2/g-C3N4 composite
5.4.1 Hydrogen production efficiency
5.4.2 Charge separation and transfer performance
5.4.3 Mechanism of hydrogen production
5.5 Conclusion
Reference
Chapter 6 LaVO4/g-C3N4 composite with oxygen defect
6.1 Background
6.2 Preparation of LaVO4/g-C3N4 composite
6.3 Characterization of LaVO4/g-C3N4 composite
6.3.1 XRD of LaVO4/g-C3N4 composite
6.3.2 TEM of LaVO4/g-C3N4 composite
6.3.3 XPS of LaVO4/g-C3N4 composite
6.3.4 UV-vis absorption and PL spectra of LaVO4/g-C3N4 composite
6.4 Photocatalytic water splitting testing
6.4.1 Water splitting efficiency
6.4.2 Charge separation and transfer performance
6.4.3 Mechanism of water splitting
6.5 Conclusion
Reference
Chapter 7 Co-C3N4/BiPO4 composite
7.1 Background
7.2 Preparation of Co-C3N4/BiPO4 composite
7.3 Characterization of Co-C3N4/BiPO4 composite
7.3.1 XRD of Co-C3N4/BiPO4 composite
7.3.2 TEM of Co-C3N4/BiPO4 composite
7.3.3 XPS of Co-C3N4/BiPO4 composite
7.3.4 UV-vis absorption and PL spectra of Co-C3N4/BiPO4 composite
7.4 Photocatalytic water splitting testing Co-C3N4/BiPO4 composite
7.4.1 Water splitting efficiency
7.4.2 Charge separation and transfer performance
7.4.3 Mechanism of hydrogen production
7.5 Conclusion
Reference
Chapter 8 Atomic Co-N4 sites in 2D polymeric carbon nitride
8.1 Background
8.2 Preparation of Atomic Co-N4 sites in 2D polymeric carbon nitride
8.3 Characterization of Co1@2DPCN
8.3.1 XRD of Co1@2DPCN
8.3.2 FT-IR, BET, SEM and TEM of Co1@2DPCN
8.3.3 HAADF-STEM, EXAFS, XPS of Co1@2DPCN
8.3.4 Optical and electrochemical properties assessment
8.4 Photocatalytic performance
8.4.1 Photocatalytic H2 generation testing
8.4.2 Density functional theory calculations
8.5 Conclusion
Reference
Chapter 9 B and P doped g-C3N4
9.1 Background
9.2 Facile synthesis of B and P doped g-C3N4
9.3 Characterization of B and P doped g-C3N4
9.3.1 XRD, SEM and TEM of B and P doped g-C3N4
9.3.2 UV-vis absorption
9.3.3 PL spectra of B and P doped g-C3N4
9.3.4 XPS of B and P doped g-C3N4
9.4 Photocatalytic activity testing
9.4.1 Hydrogen production efficiency
9.4.2 Charge separation and transfer performance
9.4.3 Enhanced photocatalytic mechanism
9.5 Conclusion
Reference
Chapter 10 Molten salt preparation of Fe@C3N4 nanosheets
10.1 Background
10.2 Preparation of Fe@C3N4
10.3 Characterization of Fe@C3N4
10.3.1 XRD, SEM and TEM of Fe@C3N4
10.3.2 UV-vis spectroscopy of Fe@C3N4
10.3.3 PL spectroscopy of Fe@C3N4
10.3.4 XPS of Fe@C3N4
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